/Engine/Source/Editor/UnrealEd/Public/MRUFavoritesList.h
Checks the favorites item specified by the provided index against the optional 'DoesMRUFavoritesItemPassFilterDelegate'.
true if the item specified by the index passes the filter or if no filter has been provided; false if it does not pass the filter
bool FavoritesItemPassesCurrentFilter ( int32 ItemIndex ) const